R anschotz



June 20, 11939. R. ANSCHUTZ COMPUTING MECHANISM Filed Sept. 22, 1931 8 Sheets-Sheet l June 20, 1939.

R. ANSCHUTZ COMPUTING MECHANISM Filed Sept. 22, 1931 8 Sheets-Sheet 2 Q Gtmv u "L I .l

June 20, 1939. R. ANscHUTZ COMPUTING MECHANISM Filed Spt. 22, 1931 8 Sheets-Sheet 3 June 20, 1939. R, ANSCHUTZ I 2,162,691

COMPUTINQ MECHANI S M Filed Sept. 22, 1931 8 Sheets-Sheet 4 June 20, 1939. Y R, c m-z 2,162,691

COMPUTING MECHANISM i Filed Sep't. 22, 1951 8 Sheets-Sheet 5 June 20, 1 939.

R ANSCHUTZ COMPUTING MECHANISM Filed Sept. 22. 1951 8 Sheets-Sh eet 6 Mar /v To P W WW Filed Sept. 22, 1931 8 Sheets-Sheet 7 1 Fig. 75.

June 20, 11939. R ANSCHUTZ commune macnmsm Filed Sept. 22, 1931 8 Sheets-Sheet 8 Patented June 20, 1939 UNITED STATES PATENT OFFICE 2.10am comma MECKANISM Robert Anschiits, ZellaFMehlis, Thuringia, Germany, alignmto Mercedes Buromaschinen- I Wes-kc Aktiengeaelllcbaits Benshausen, Germany Application September 22, 1931, Serial No. 564,453 V In Germany November 6, 1930 scans.- (01. 235-59) N This invention relates to totalinng-counter mechanisms. for typewriting-calculating machines.

It has hitherto been proposed in calculating machines in which subtraction is performed by ticles, in the known types of typewriting-calculating machines, difliculties are presented and may easily "lead to a result, which is one less than the correct result. This is the case, for instance,

if from the number of admission tickets disposed of, the number of sold admission tickets is to be determined. If the last admission ticket sold, bears the number 700 and the ticket first disposed of bears the number 350, in calculating the number of tickets sold, by subtracting those. numbers in a totalizer, the result indicated on the numeral wheels is 350; Thenumber of tickets actually disposed of, however, is not 350 but 351.

In adding machines, devices are. already known for avoiding 'this source of error but in,these machines, the usual tens transfer mechanism is used for introducing the "1 which is lacking by .presetting the machine, whereby the total (1. e.

the difierence) when taken will be larger by one unit. This arrangement, however, does not lend itseli to application in typewriting-calculating invention, by. providing in conjunction with a totalizing-counter mechanism, a manipulation device independent of. the manipulative members used in addition-and subtraction, and adapted after the termination of a'ca'lculation by the machine, to operate ,the totalizing counter mechanism so as to introduce an additional amount thereinto inone direction only.

It is already known in connection with typewriting-calculating machines havin g totalizers for registering bothpositive and negative-totals, to provide devices for introducing additional amounts independently of the machine calculating operation, but such devices are inapplicable.

to the present purpose as they operate in both directions and also withdraw amounts which have already been registered.

In the drawings, examples of arrangements inconjunction with the known'Mercedes-Addelektra typewriting calculating machine are illustrated.

Fig. 1 is a front view of a power driven typewriter calculating machine having a cross footer.

Figure 1a shows a perspective view of the reversing gear for the cross-footer.

P18. 2 is a side elevation of Figure 1 viewedin the direction of the arrow A.

Fig. 3 shows in perspective the escapement. mechanism with fixed and stepping dog therefor.

Fig. 4 shows in perspective the cross footer carriage with the cross footer secured thereto, a part of the cross footer being shown broken away for uncovering some sections, whereby for go the sake of 'clearness the parts according to the invention are removed. This is also true with regard to the cross footer, shown in Fig. 1.

Fig. 5 is a perspective view partly broken away oi the pick-up means for the cross footer, the

- controlling mechanism for the clearance sign printing means and the controlling mechanism for the carriage return means.

Fig. 6 shows in perspective the clearancesign printing means.

Fig. 7 showsthe driving and coupling means. for the power operated cam shaft N- of the typewriting mechanism partly in elevation and partly in section. machines, as in these machines, the tens trans- Fig. 8 shows in perspective the pick-up means for the crossfooter, some parts being shown separately for thesake of cleamess.

Fig. 9 shows in perspective parts of the carrlage escapement mechanism, shown in Figure 3 I but seen in the direction opposite to that in Fig-' 4 are 3.

Fig. 10 showsa front, view oithe usual cross totalizer with the arrangement according to the invention.

Fig. 11 shows a side view of the cross totalizer 5 viewed in the direction of the arrow a, of Fig. 10, wherein the parts are represented in their rest position.

Fig. 12 shows a side viewoi the cross totalizer likewise viewed in the direction of the arrow, a, of Fig. 10, wherein the parts are represented in the-position which they assume after operation resulting from unlocking of the clear sign impression device. ,7

Fig. 13 shows in perspective view the locking mechanisms for the clear impression and differential members in conjunction with-the arrangement according to the invention.

Fig. 14 shows a detail, partly in section, in Fig. 13. I 1

Fig. 15 shows in diagrammatic representation,

the arrangement of the column totalizers andparticularly the setting of their teeth. which control the type of calculation in the cross totalizer,

according to the example of calculation tobe later described.

Figs. 16 to 19, show the individualsettings o I i1: is the frame of the typewriter calculating" machine and the carriage 40: carrying the platen v 3a: is slidably arranged on the rails 2a: and 20;): (Fig. 2). By means of the carriage pulling spring (not shown), the carriage 4a: is 'urged constantly (Fig. 1) from right to left and when striking a type lever Gxagainst the platen 3x, the

carriagefla: is moved one step to the left by the escapement 5:: completely shown in Figure 3.

There is provided at the front of the typewriter the rear wall la: of the actuator which carries all the counting mechanisms while the driving shaft Ella: for'operating the actuator is mounted in the two side walls 81: and 9:: (Fig. l) of the frame Ix. The said driving shaft Illa: is constantly rotated in the direction 'ofthe arrow a by the constantly running motor Ila; over the toothed wheels l2: and i331, the shaft Hz, a sprocket wheel at secured thereto, the chain I62: and the sprocket wheel "a: arranged on the shaft I01: itself. C

The ratchet wheel I81: is fixed to the shaft l0: and rotates therewith. Such ratchet wheel 18:: is provided for each of the ten calculating keys. The calculating key levers 20zrare pivotally mounted at 2h: on the machine frame and are normally maintained in their position (Fig. 2) by on the shaft Him. The said pawl 28:: therefore moves in the direction of the arrow bundenthe action of the compression spring 292: acting on the pawl and the lug 30:: upon said pawl engages the constantly rotating ratchet wheel I83.

Obviously, the cam disk 21;: corresponding to the depressed key will thereby be coupled with the ratchet wheel I81: and the shaft Ilia: respectively for a single revolution. 7 Consequently, the

counting slide 22, which comes in contact with the cam disk 21:: by means of a roller 3h: moves downwardly first under the action of its engaging spring 33m'and then upwards again by the rotation of the cam 211:. The slot 342: of the count ing slide 22, corres pnding to the value of the depressed key acts on the rod 35:: of a rocking frame secured to the rotatably mounted shaft 36.1: whereby the shaft 361: is turned in conformitywith the depressed value- There is mounted on the axis 363: the well known single-way segshaft 2103 is transmitted through the wheels M01? and 2l0G, which are in fixed relation to one izers I.

ment, 2M0: (Fig. 1) which transmits the rocking movement of the rocking frame to the toothed wheel 2IOA of the it 2MB. The shaft 2l0IB hasmounted upon it the toothed wheel 2l0C which is axially movable .on the shaft but not rotatable thereon. The wheel 2'IIC can be moved into three-different positions by" means of a lever (not shown). 7 It the wheel 2N0 is in the positionshown'in Fig. 1 the rotarymovement of the another, to the wheel 2l0H, which is arranged in. rear of the wheel 2|0G. The wheel 2|0H is secured to the shaft 2 I 0K, to which also secured the main/driving wheel 2101-. which enters the. corresponding amount additively in the total- It may be mentioned at this point that the wheels 2|BG, 2IBF, 2l0H and HOE all have the same number of teeth. I

If, however, the wheel 2l0Cis in'its middle position, that is to say, if the wheel 210C assumes the position between the wheel. 2|0F and the wheel '2IOE, no transmission of the rotary movement of the shaft 2103 to the shaft 2IIIK takes .place. If now the wheel 0C is in; engagement with the wheel 2IBE (Fig. 1), a transmission of the rotary movement of the, shaft. 2MB to the shaft 210K takes place, in which case the corresponding amount is entered subtractivelyin the totalizer i. Y

A similar reversing gear is' provided for the cross-footer Q. If the wheel -2|OM (Fig. 1a) which is displaceably but .non-rotatably fixed upon the shaft 2MB is in a position as illustrated in Fig; 1a the rotary movement of-the shaft 2 I 0B is transmitted through the wheel ZION, which is fixed upon the shaft 2! OR, to the shaft 2l0R. On the shaft 210R. is secured the 'main driving wheel 2lllQ which enters the corresponding amount additively in the cross-footer Q. If the wheel 2l0M is in its middle position, in which position the wheel 2IOM is situated between-the wheel Him and the wheel 2108, a transmissionof. the cor-' responding amount to the cross-footer Q cannot take place. The wheel 2IIIS is wider than the wheel 2MP. 'If, however, the wheel 2IUM is in engagement with the wheel 2108 a transmission of the rotary movement of the shaft 2lllB-to the shaft 2 "IR takes place through the intermediary of the wheel 2IOP which islikewise fixed upon the shaft 2|0R. Consequently the corresponding amount is transmitted-subtractively to the crossfooter Q. At this point it should be mentioned that the wheels 2lllN and. 2MP have the same number of teeth.

In order to maintain the cam disk 21:: in its normal'position shown in Figure 2, the same is secured to a disk 21: on which-is rotatably mounted a roller 21am on the opposite side to the cam 21:. The said roller cooperates with a lever 21b3, which is also pivoted at 21:: and is always kept incontact with the roller 21:12:: by a spring 21cc: secured to the lever and'also at 21am: on the machine frame. Since the end of the lever 2111a: away from the roller 21am doesnot bear against the member 262:, the cam disk 212: will always be urged in the direction of the arrow a by the spring 2101:, acting through the lever 21hr, the roller 21a; and the disk 212', while the rotation of the cam disk 21:: is prevented by the lug 28am of the pawl 28:: coming in con'tact against the 5 There is secured to the front wall 31:: (Fig. 2) of the machine frame Ix, covering the calculating' mechanism, a bracket 30:: wherein by means of balls "as: a carriage "in: (Fig. 4) is slidably mounted on which the cross footer Q is secured.

There is secured to the carriage 30b: a pin llca:

with which a spring Ildx engages. The spring "do: is fastened at its other end by a pin If: secured to the cross piece 38a: of the bracket 38:. By means of the spring "d: the carriage "ha: is pulled against the cross piece flex of the bracket 30:: whereby its normal position, as shown in Figs. 1 and 4 is established.

There is connected to the cross footer Q a con- 49:: is riveted to the free end of the lever 41b:

and extends through slots Sla: of the lever 3. There is formed on the said lever 3 (Figs. 5 and 13) a projection or lug 2 which cooperates with the cams Ia (Fig. 1) of the totalizers I mounted on a rail T (Figs. 1 and 2). A triangular groove 9 having a bevel edge 90 (Fig. 5)' is also rovided in the lever 3, a pint secured to the machine frame Ia: extending into the said recess. The lever I is secured by means of the screw 80:: to the lever 4. It is obvious from Figures 5 and 13 that by means of the triangular groove and the pin I as well as the elements 502:, 492:, 41a; and the spring "(11, the lever l is maintained in its horizontal normal position, shown in Figures 1, 5 and 13.

The lever 4 is connected at 5 to the machine frame and is actuated clockwise by a tension spring 6 (Figs. '5 and 13) fastened to the pin L the normal position of the lever. 4 being maintained by means of the connection of the triangular groove with the pin 8. The lever III (Figs. 1, 2, 5 and 13) is adapted to pivot freely on an axle I I below the bracket Six-and cooperates with thelever 4.

By means of a U-rail II, the lever I is c'onnected-at its forwardly extending free end (Figs; 1, 2 and 13) to a lever I2 rotatably mounted on the axle II.

By-means of the roller I34 (Figs. 1, 2 and 13) the said U-rail I3 is slidably connected to the slide I4 adapted to move vertically on the wall of the cross footer Q. The slide I4 has two upwardly extending members Ma and I4b, which are connected by means of the screws I and It to the members 11 and II (Figs. 2, 4 and 13) of the rake-like rail II, actuated by a spring ll: (Fig. 2). The rail 2| is adapted to pivot on the screws I! on the side walls of the cross footer Q and cooperates with the numeral gears Za: (Figs. 1 and 4) which have in the known manner a shortened tooth on the part corresponding to the zero position of the totalizer wheels 3.1: (Fig. 4).

In Fig. 4 the totalizer wheels B2: are shown close together for the sake of simplicity while there is actually a space between all of them for the toothed wheels Z: secured to them, and conalso' rotatably mounted on the axle II. The arm 94: is providedwith a knob 96:: and the 94::

may be actuated by the lever (Figs. 1 and 2) of the U-rail I3. Regarding the function of the knob 96:, as will be understood the clear sign is printed only when the cross-totaliaer Q stands at zero. If any number wheels Z: are out of zero position and the feeler rake 2i released by lever 1 4 said rake can only swing out to the extent persuch slight swinging of lever 88:: renders locking mechanism effective to prevent the introduction of values in the cross-totalizer Q. To correct the situation the locking means must be rendered ineflective and thisv is accomplished by manipulation ofknob 96:: to force lever 93:: upward whereby the feeler rake is returned to normal position, the springs Ila: tensioned and the locking mechanism rendered ineffective by the lever 4. By means of the screw 911, a lever "x is secured to the downwardly extending arm 85:: (Fig. l), the lower end of the said lever 9|: 'being provided with a cam slot 992:. The lever IIIlx is pivotally connected to the lever 95.1 by means of the screw "Hz, the other end being bifurcated and enclosing a pin I023: (Fig. 2) which is secured in the intermediate lever I03: (Fig. 2) of a type lever. The intermediate lever I032: is adapted to rock on the axis I04: and is connected by its pin .IIISa:

to a type lever 6x, rotatably mounted on an axis I062; and carrying the clearance sign printing stantly urged by a tension spring I": about its pin IIi'lx counter-clockwise and abuts against an .abutment Iltx, whereby its normal position is maintained. There is formed on the pulling hook I082 a lug or projection III: which cooperates with a pawl H21. This pawl H21: is mounted by means of a pin I I3: on the key lever II4x and is urged by a tension spring H51 in such a manner that it bears with its lug Hi1: against a projection Illa: upon the key lever II4x. The key lever II 4:: pivots at H81: and is maintained in its normal position by a spring H91: and an abutment I202.

The lever II4x, by means of which the clearance sign type lever to: is struck, is not provided with a key but has a pin' I No: which engages in the cam slot 981: formed in the lever "at. There is arranged below the pulling hook I002: the ratchet shaft N which is driven from the driving shaft I42: (Fig. l) by a sprocket wheel as: (Figs. 1 and 2) fixed thereon-and a chain I402: driving a sprocket wheel hr. The sprocket wheel I4b'.'c is rotatably but not slidably mounted on the stationary part I4ez' of bearing Her. The spindle I4d:c which is rotatably and slidably mounted in the part I4ex' (Fig. 7) carries on its left end the clutch portion I4]: and on its right end the knob I4ga: which is rotatably arranged but not displaceable axially. In the hollow hub of the sprocket wheel be, a collar I4kzz: is fixed to the spindle 11:, carrying two pins mm which protrude through slots I412: on the hub of the sprocket wheel I4bx,, whereby rotation is transmitted from the sprocket wheel llbz: "to the spindle I4d'x. The slots I 4122: are of such length that when the knob 149:: is pushed to the left. the clutch portion I: is allowed to engage with the clutch portion ha: (Fig. 1) secured to one end of the ratchetshaft N, whereby the shaft N rotates in the directionof the arrow indicated in Fig. 2. The spindle do: is locked in clutched and unclutched positions by a spring pin I ihx', which is adapted to engage in corresponding notches Mix and i117.

The totalizers I are provided with cams 5511.: (Fig. 1) extending into the path of a pick-up mechanism, which is secured by means .of the screw I221: (Figs. 1 and 4) to the cross footer Q. The pick-up mechanism which substantially comprises a rod I231: (Figs.- 1 and 8) extends at the other end through the medium of a screw I24a: (Figs. 8 and 5) into a horizontal slot (not. shown) of .the front wall .of the calculating or actuator mechanism.

The hook I251: is pivotally mounted by means of a pin I263: on the rod I23:c of the pick-up mechanism (Figs. 1' and 8). At the point I25ba: of thehook I251; the hook I211: is pivotally mounted, on the end I21aa: of which a wire spring I21ba: acts. The spring is secured at 1210:): to the rod I23:c. In this manner, both hook I253: and hook'l21x are maintained in their normal position, asshown in Fig. 1. The normal position of the hook 121:: is thus established by the latter bearing on the pin I23bz. It is obvious that owing to the greater distance of the point of connection of the hook I259: from the engaging point of the spring I21bx, the left'end of the hook I25x-is subjected to a greater spring action than the left end of the hook I 211;. This has the advantage that during the left hand movement of .the paper carriage 4x, the cams 551m of the totalizers I are easily adapted to press the hook I219: downward- 1y, for which purpose the end I21x' of the hook I213 is also suitably shaped. If the cam 55cc: of the respective totalizer has moved over the hook I21xit meets with resistance on the correspondingly shaped projection I251." of the hook I35x,

\ is now moved further to the. left, it is obvious that the rod I231: will now be carried along and; Since the latter is secured at I220: to the cross footer Q which, in its turn is secured to the car- I riage 38hr (Fig. 4) this cross footer Q together with the carriage 38hr willalso be carried along against the action-of the spring 38410:. If during this left hand movement, the hook 1251c bears Y with its part I25azc on the pin I282: (Fig. 1) fixed to the machine frame, the hook 125.: will be swung in the anti-clockwise direction about the pin I261: whereby it is released from the cam 55am of the corresponding totalizer-l so that the cross footer Q together with the pick-up mechanism and the slide 38hr can return to their northe machine frame and is driven by a rack I563 securedto the paper carriage lx-in' any suitable manner (for instance, by screws) the said rack engaging in a toothed wheel I551: which is also secured to theshaft I541 Since the shaft I541 extends through the dog rocker "1.1:, a hole I 41: (Fig. 9) is provided therein which is large enough so as not to prevent a free swinging out of the dog rocker The arm I51z of the dog rocker I 611' is oscillated from the moving type lever is: as hereinafter fully described.

In the normal position, a tooth of the escapement wheel I533: lies on the stepping dog I493, while the fixed dog I523: isout of engagement. with the escapement wheel I53zv. The briefly described carriage escapement shown in Fig. 3 is usually provided in the Mercedes typewriter of which there are many thousands on the market and is only described herein for the purpose of a better understanding of the invention.

There is also provided a bell crank lever I68aa: (Figs. 1 and 5) adapted to pivot on.a spin- (Figs. 1 and 5) 'of the rod I1Ia: and carries it to the left against the action of the spring I1Iax. In this manner, the bell crank lever I12zis pivoted about point I12aa: counter-clockwise so that the U-shaped yoke or stirrup I132: is raised and thus releases the lever I152, the lever 115:: connected to the lever Illaa: (Fig. 1) bearing with its projection I15aa: against the cross piece I13aa: (Fig. 5) of the yoke "33:. Consequently, the lever Illaa: secured with thelever I162: (Fig. 1) on the common rotatably mounted spindle I11:zi may then rock.under the action. of a torsional spring I182 counter-clockwise whereby the lever i161: is'swung out in the same direction. -The lever I163: engages with a pin I192: in an annular groove I801 of a constantly rotating. clutch portion I8Ia; and shifts the same (shown in Fig. 1) to the left so that its teeth enter into engagement with the clutch portion I822, thereby rotating the wheel I83x, secured thereto. The wheel I831:

drives the wheel I89: (Fig. 2) through means of the wheel gears I842: (Fig. 1) lair, I862, I811: and I883: (Fig. 2).

Since the wheel I89: engages 1903:, the carriage will therefore be brought back to its right end position. Shortly before the termination of the returnmovement of the carriage, the left margin. adjuster R11: (Fig- 1) moves against an abutment or stop 1151):): (Fig. 5) of the rod 115d: slidably mounted'on the machine with the rack frame and connected at H501: to thelever I153;

whereby the rod I15da: (which was also pre-- viously moved'to the left-by the lever "5:11) is again moved. to the right against'an abutment or stop 1158.22 on'th'e frame while the lever I153: also moved to'the right and consequently the member I13: with its cross piece 1130:: can again drop in front of the projection "in; of the lever 8152?. During the movement of the lever I151: on the right, the lever I1'4aa: was of course also rocked clockwise whereby"the.clutch IBM: and

1822: over the parts I111: (Fig. 1), I16: and I192: is again openedand the return movement of the carriage interrupted.

The levers 25 and 25a carrying the locking beam 23 (Figs. 2 and '13) are secured to the rotatably mounted shaft 26. Now if the" counting slide 22 during the downward movement acts with its bevel 22a on the locking beam 23, the shaft 26 will rock clockwise, whereby the unlocking lever 2021: connected to the shaft 26 acts on the corresponding locking lever 2320.1; arranged in the totalizers l. The purpose of the locking levers 202cm is known and is therefore notfully described herein since their operation is fully described in U. 8. Patent 1,270,471 on page 9 wherein they are referred to as "swinging arms. Thespindle 2 also carries a lever 32 which cooperates with a lever 34 mounted on a spindle 33. When the shaft 26 turns, the lever 32 rocks clockwise and effects by means of the lever 34 a turning of the shaft 33 and a counterclockwise rocking of the unlocking lever 3t secured to said shaft 33 and causesthe unlocking of the cross footer Q.

The lever 36 has the same function as the lever 202a: since it actson the unlocking levers 206111: of the cross footer which are quite similar to the unlocking levers 202a: of the totalizers.

The operation. of the above mechanism is as follows:

By depressing a calculating key l3: (Fig. 2) the key lever 20:: is rocked aboutjl: clockwise, whereby the end 2011:: of the key lever 20:: is rendered inoperative relatively to the projection 280::

arrow b to such an extent that its projection 30::

engages with the constantly, rotating toothed wheel i8 x and thereby couples the cam disk 21:: with the same so that. the cam disk participates in the rotation. At the same time, the hookshaped extension 2010:: of the lever 201x slidesspring 210:: clockwise until its one end bears against the rail 26:. Prior to the completion of a revolution, the roller 21am comes in contact with the other end (in the form of a cam) of the lever 21b: and rocks the same on its pivot 2h: counter-clockwise against the action of the spring Zlca: engaging therewith until the roller 21a: goes beyond the dead center This. From this moment, the lever 21b; exerts a driving action on the roller 21a: and on the cam disk .212, whereby a rotatory motion independent of the shaft I0: is imparted to the cam disk-21: and simultaneously effects a lead of the cam disk relative to the shaft II: and the toothed wheel II: respectively, thereby facilitating the unliglzlpling of the pawl 30:: from the ratchet wheel- At the same time, the projection In: of the latch 28:: comes in contact with the projection 201cc: of the lever 2": when the lever 23:: is

depressed in its path of rotationewhereby the latch 28:: comes out of engagement with the toothed wheel In. In this manner, the lever 201x abutting the latch 28:: is brought against the action of the spring 20!: into the position, (shown in Fig. 2) relatively to the key lever 2|: while when depressing the key "z the projection 201a:-

passing under the rail 23:: becomes free so that the key lever mechanism candle be retumed by the key lever spring 24:: to the positionshown in Fig. 2. When the key lever 2i: rocks in its nor mal position, the projection 231m: of the lever 2312: comes out of contact with the projection 23a: of the latch 23:: so that the cam disk 21:: can rotate further under the action of the spring 11cm until when the projection 23d: comes in contact with the end Ilbz of the key lever 20:: in its operative position when a further rotation is prevented. The individual parts of the mechanism again assume their initial position as shown in Figure 2.

If when depressing a calculating key I91: the cam disk 21:: participates in the rotation of the driving shaft II: and consequently the corresponding counting slide 22 moves downward, the cam slot 34:: thereof acts on the spindle 35:: whereby the frame Ilia: and consequently the spindle 33:: is rocked counter-clockwise in accordance with the value of the depressed key.

The rocking movement corresponding to the value slides 22. For the purpose of transmitting this rocking movement to the counters there is secured, as already stated, to the spindle 362; asegment (not shown) which brings the value corresponding to the depressed key I92: into the totalizer which is just in operative position and into the cross footer. After a complete transmission of the value i. e. prior to the completion of the downward movement of. the counting slide 22, the pin 22b arranged on the latter acts on the corresponding numeral writing key levers which are similarjin shape to the clearance sign printing key lever ill: except that they are provided with keys 82:. It is obvious that parts similar to the parts I I23, I081, I032: and 6a: are also coordinated to each of the said numeral writing key levers. However, none of the counting slide pins 22b act on the clearance sign printing key lever I :c. It is therefore obvious that when the pin 22b acts on the corresponding writing key lever, the corresponding type lever will strike against the platen 31: whereby the calculated value is printed. In this manner, the type acts on the universal bar 2: and moves it in the direction of the arrow yr. The lever 2:1: is thereby rocked on its fixed pivot Ilia: counter-clockwise and consequently the rod 2l3x is drawn inthe opposite direction of the arrow g: whereby the dog rocker I": is rocked by the arm l 51:: (Fig. 3) about the center points i532: and I 5i: against the action of the compression spring iflax (Fig. 2). In this manner, the stepping dog I a: (Fig. 3) becomes disengaged from the escapement wheel I53: and the fixed dog 52:: becomes engaged therewith, the loose ratchet tooth Ilia-swinging upwards about the spindle I: under the action of a spring. When the type lever 8:: (Fig. 2) has struck th platen 3:, the tension spring I: a ti-81 8 with the pulling hook Ill: returns the type lever 02: to its normal position whereby the dog rocker I": also returns to its normal position under the action of the compression spring lilazc. The carriage pulling spring then acts on the paper carriage I: and the rack I 561: (Fig. 9)- secured 'thereto, which drives the escapement wheel 153::

by means of the wheel I 551: and the spindle film in the direction of the arrow indicated in Fig. 3 while the stepping dog I49: which has meanwhile returned with the dog rocker I": to the normal position engages in the next tooth-space of the eacapementwheellmsothatthepepercarthis stepwise movement of the carriage from right to left, the cam 55am: (Fig. 1)

of the totalizer I which is in operative position has operative connection with the hook I251: of the cam operated mechanism I231: whereby the cross footer Q is carried by the carriage l1: until the respective totalizer again movesout of the operative position, which takes place in the following manner.

When writing the value which is in the units position of the cross footer Q the pin I281: (Fig. 1) ,arranged on themachine frame Ia: acts in consequence of the movement of the carriage on the projection I25az of the pick-up hook I25a: and swings the latter-in the anti-clockwise direction about the point I261: whereby the pick-up mechanism I231: and the cross footer 'Q is released from the cam 55m: and can return to its normal position shown'in Figure 1. By the movement of the carriage which is caused when writing from the units position, the projection In. of

the totalizer I also acts on the projection 2 the springs 81.1: (Fig. 2) can act on the rake like contactingrail 2i. thedriving wheels Zn: of the totalizer wheels B1: (Figs. 2 and 4) wherein, as stated, that tooth is shortened which in the zero position of the totalizer wheels Ba: lies opposite the rail 2I. This swinging out of the rail 2I is therefore only possible when the shortened teeth of all wheels Zr are opposite thereto 1. e. only when all totalizer wheels B2: are at zero.

If in the writing out of the value, the cross footer Q comes to zero, the springs 81:: are adapted to completely swing the member 2i clockwise. Consequently, theslides Ila and Ilb inove downward and swing the yoke on the axis II clockwise (Fig. 2) the said yoke comprising the U-rail I3 and the levers I0 and I2. In this manner, the lever l2 acts onthe arm 9h: of the lever 93:, 959:, and 88a: and also rocks the same clockwise So that the cam slot 931: of the lever 98:: acts on the lever Illa: and presses it downward against the action of its spring I ISa: whereupon the pawl I IZa: positively connected to the key lever Illa: causes the pulling hook I082: to engage with the cam shaft N constantly rotating in the direction of the arrow nm. The intermediate lever I03a: is thereby swung out on the axis I041: clockwise and. thus effects the striking of the type lever 6:: bearing the clearance sign against the platen 3:: whereby the clearance sign is printed.

During this operation, however, the rod 1033:,

which is connected to the lever x, has'also been'moved in the direction of the arrow as: (Fig. 2) to such an extent that the bifurcated end of the-rod is movedinto engagement with the pin' I022! on the intermediate lever I032; As this lever is operated by the pulling hook I081: the pin I021: will move the rod IIlIla: in the direction opposite to that shown by the arrow mm, whereby the member 2I is returned by means of the elements 95.1., 930:, 941:, I2, I3, Il, Ila and Ilb to its normal position shown in Figure 2, the springs 81:: being again tensionedand the lever lagain engaging over the lever I8.

When the rod 3 is drawn by the projection Ia .ofthe totalizer I in-the direction of the arrow daLFig. 5-,the projection 2 is released, from the projection Ia of the totalizer'I in consequence of the lever 3 and draws the latter to the left, whereby the lever l releases the lever III so that The latter cooperates withangular groove 9 coming in contact with the pin 8, whereby the. parts 3, 4 can return to their normal position under the action of the spring 6.

If the clearance sign has now been printed, the margin adjuster Raa: will abut, during the further stepwise leftmovement of the carriage, against the lug I'Ilx (Fig. 5) of the rod Him, as already stated, whereby the return movement of the carriage willtake place.

It is obvious from the above descriptionthat during a movement of the carriage'from right to left the cross footer Qis automatically carried along, the clearance sign printing means is rendered operative and the return of the carriage takes place while a movement of the carriage from left to right does not render the said mechanisms operative since the cam hook I251: is merely forced downwardly by the hook 55113:, the

lever 2 by the projection Ia and the lever I'IIa:

without any effects lever l abuts with its edge l against the right side of the lever I0-. whereby a lock is made operative "which prevents actuation of the differential members 22 through their downwardly acting springs, until the rail I3 is pressed upwardl'y by hand so that the lever III can be again engaged by the stop lb of the lever 4. This lock acts as follows:

For all the differential members 22a common angle rail '23 is arranged so as to be rotatably mounted on the pins 28, 2M. (in Fig. 13, only the pin 2l is visible) on the levers'25, 25a, which are pinned on a shaft 26. The angle rail 23 is acted on in the clockwise direction by a spring 21 and under the action of this spring, rests against, the pins 28, 28a arranged on the machine frame an Fig. 13, only the pin 28, is visible) whereby the rest position of the rail 23 is determined. The'shaft 26 is rotatably mounted on the pointed screws 29 (Fig. 14) which are screwed into the side walls 30 (in Fig. 13 only the right hand sidewall is shown) and are secured by means of nuts 3|. The right-hand nut 3!, according to Fig. 14, is reduced and on it a lever 32 is rotatably mounted. This acts with its lower end 32a on an angle lever 34 pinned to the shaft 33 and is acted on by means of a spring 35 in .the clockwise direction. On the right-hand end of the shaft 33, moreover, is.

, 32 can co-act with an angle member 38 fixed to the bar 3. If the bar 3 which, moreover, is guided in a slot 30a of the side wall 38 is in the position of rest represented in Fig. 13, the

lever 32 can swing freely in the clockwise direc-..

tion. If,however, the bar 3 moves in the direction of the arrow '0, the angle member 38 fixed to it, places itself in the path of the lever 32 and prevents its swinging movement in the clockwise direction. Thereby, the edge 38a of the angle member 38 is in contact with the part 3017 of the side wall 30. The lever 39, which-is pinned on the shaft 28, acts on the lever 32.

If the bar 3 is in the rest position, as represented in Fig. 13, in the downward movement of a diflerentialmember 22, its edge 22d acts If, however, the bar I is moved in the direction of the arrow c, the angle member 38 places itself in the path of the lever 32 so that the 'latter cannot swing clockwise. In consequence of this, the lever 39, the shaft 20, and the bail 25-23-2541, cannot swing clockwise, so that it is not possible for the differential members 22 to move downwards and any calculating operation is prevented, that is to say, the calculating mechanism is then locked and further calculation is impossible In order to withdraw this lock, it is only necessary to lift the U-rail i3 whereby the lever 4 with its stop 4b snaps over the lever l again and as a consequence, the

bar 3 can return to its rest position in which the angle member 38 again permits the lever 32 to swing freely in a clockwise direction.

On the housing of the cross totalizer Q a bail 42 is swingably mounted by means of screws 40 and 4| (Figs. 11 and '12) said bail being provided with a grip 43 serving as a handle for swinging the bail 42. The limb 42a of the bail 42, in contradistinction to the other limb 42b, is provided with teeth 420, which are in continual engagement with the teeth of a toothed segment 44. The toothed segment 44 is swingably mounted on a screw 45, and the teeth 44a, formed on the lower part of the segment, engage with another toothed segment 46. This toothed segment 46 is loosely disposed on a shaft 41, which is rotatably mounted in the side wall of the cross totalizer.

Further, the limb 42a of the ball 42 is provided with a nose 42d, which co-acts with a pawl 42f, swingably mounted on the screw 42c. By means of a torsion spring, not shown, positioned around the screw 42c, the pawl 42] is always .acted on in the anti-clockwise direction. In the position represented inT- Fig. 11, the face 42d of the nose 42d and the face 42f of the pawl 42! co-act. If the bail 42 .is swung in the direction of the arrow If, the face 42" of the nose 42d coacts with the face 42!" of the pawl 42!, and

therefore holds the bail 42. in its position as' represented in Fig. 12. The pawl 42! has thus the solepurpose of securing the bail 42 in both of its end positions. I

On the inner side of the cross totalfzer side wall, a three-toothed wheel 48, -is fixed on the shaft 41, so as to be'incapable of rotation thereon, and this wheel can engage with the driving wheel 49, which drives the number wheel in the units position Eq of the cross totalizer, but

normally, it is out of engagement. Further, near the toothed segment 4., a cam ll; provided with three stops and fixed on the shaft 41, is arranged. With the stops, a pawl II can engage, the pawl being swingably mounted on the toothed segment 44 by means of a screw B2. A pawl 53 also engages with the stops of the cam 54 and by means of a screw 54 is swingably mounted .on the side wall of the cross totalizer Q. Both of the pawls SI and U, are, bymeans of springs,

not shown, maintained in engagement with the cam ll.

' Further, on the side wall of the cm totaliser Q, a slide 55 is arranged which is guided partly in a lug i bent on the rear end of the side wall of the cross totaliser Q and partlyin an angle piece 58, fastened to the side wall by means of a screw 51. The slide 55 is provided with a nose 59 and has on itsforward end a stop 6|. By means of a spring, I engaging with the, slide 55, the latter is always acted uponin the direction of the arrow b1, whereby'its stop ll rests against a stop 52a. (Fig. .16) on the angle piece 58 and it is held in the rest position, as representedin Figs. 11 and 16. The forward end of the slide 55 projects into the path of a nose 62, which is formed on the clear sign bridge I4. Further, on the latter, a nose 63 is arranged which in relation to the nose .2 is displaced to the left. On the toothed segment 44, a'pawl 6 4 is attached by means of a screw 65, so as-to be capable of swinging thereon, and by means of a 2 spring 86 is drawn always against a fixed stop 61. The pawl 64 co-acts in a manner to be later described, with the nose. 5! of the slide 55. The manner of operation is explained with the aid of the following example of calculation.

Let it be assumed that in an advance booking of admission tickets, so many tickets are sold at an advance booking oflice, that the reckoning up of such takes place at the principal oiiice, and that the tickets Nos. 350 to 700 have been d sposed of. In a similar manner, reports go in from'all advance booking oflices and from this data, the total number of tickets disposed of, is

to be calculated. If these numbers were simply deducted from one another, the number of tickets disposed of would be too small by one ticket. It is consequently necessary to add a "1 to the real diiference. 1

For carrying out this calculation, three verti cal column totalisers set for addition are necessary, these totalisers being represented diagrammatically in Fig. 15 and indicated by i, i', and l".

Further, a cross totaliser, Q, constructed in the manner above described, is necessary, in which the bail 42, serving as a flap for the inspection aperture, is set by hand in the position shown in Fig. 11, in which the inspection aperture 8 iser, is set for addition, is brought into the working position, and the number "700" registered so that the number "350 now stands in the cross totaliser Q. As, however, the inspection aperture S of said cross totaliser, is now covered by the bail 42, if the number on the cross totalizer is to be made visible, the bail 42 must be shifted up into the podtion according to Fig. 12

whereby the following operations take place.

In the swinging movement of the bail 42 in the d rection of the arrow h (Fig. 11) the teeth I of the limb 4a of the bail 42, act on the teeth the latter swings round the shaft 41, in the direction of the arrow n. The pawl 5| mounted by means of the screw 52- on the toothed segment 46, acts then on the stop of the cam 50, which is rigidly mounted on the rotatably mounted shaft 41, so that the shaft 41 is likewise rotated in the direction of the arrow n. This rotation is followed by that of the three-toothed wheel 48 fixed on the shaft 4-1. The toothed wheel 48 acts now with its tooth on the toothed wheel 49, and rotates the latter for one tooth in the direction of the arrow 1', whereby the number wheel of the unit place is further rotated for one unit in the additive sense so that now according to the above example the number 351 is visible in the inspection aperture S. The pawl 53, in the rotation of the cam 50, moves into engagement with the next following stop of the same and, therefore, prevents the cam 5|! making a rotation in the direction opposite to the arrow 11.. From the swinging movement of the toothed segment 44, also follows that of the pawl 54, rotatably mounted on it by means of the screw 55. This acts on the nose 59 of the slide 55, and displaces the latter so that the stop 60 rests with its edge on the angle piece 58, according to Fig. 12 or 1'7, whereby the forward endof the slide 55 is brought out of the path of the nose 52 of the clear sign bridge l4, but remains, however, in the path of the nose 63 and rests on this as shown in Fig; 17. The

clear sign bridge I can also now travel downwards unhindered.

In order to bring the cross totaliser to zero, the amount 351-is registered in the column totaliser I, of which the cam for controlling the type of calculation in thecross totaliser Q, is set for subtraction, by striking the corresponding calculating keys. Q

If the last. figure is nsible in the column totaliser l, the nose Ia. (Fig. 13) of the same has so acted on the nose 2 of the bar 3 that the bar 3 is displaced in the direction of the arrow 0, and therefore the angle member38, fixed to it is placed in the locking position. Moreover, the lever 4, jointed to the bar 3, is swung around its Swinging axis 5, against the action of its spring 6, in the anti-clockwise'direction, whereby its stop 4b is disengaged from the lever Ill. Fur.- ther, the lever 10 rests with its flat side on the edge 4a ofthe lever 4, and swings round the shaft Ii in the clockwise-direction under the action of the spring before mentioned, acting on the feeler rake 2|. As now the cross totaliser Q stands at zero andthe slide 55 is set according to Fig. 12 or 17, the feeler rake 2l, as previously mentioned, may swing completely in the direction of the arrow 1', whereby the clear sign bridge l4 likewise travels completely downward according to Fig, 18 and the slide 55 also takes up the position according to Fig. 18, under the ac- Consequently, the clearsign is automatically printed as an indication that tion of its spring 6|.

under the action of the spring v6, again snaps 7 over the lever l0, whereby the bar 3, which meanwhile is freed by the nose la of .,the column totaliser l,.is displaced in the direction opposite to the arrow 0, and the angle member 38, fixed to the bar 3, is also displaced from its locking position with respect to the lever 32.

In the swinging movement of the lever l0 round the shaft II, in the anti-clockwise direction, the U-rail I3 is also swung, whereby the clear sign bridge H, has moved upwards and the parts cone nected with it are again brought into their positions of rest.

In the movement of the clear sign bridge l4 moved forwards in the direction of the arrow b,

55 is sufllcient to move said slide out of the posi'-- I tion represented in Fig. 17 and into the position represented in Fig. 16.

The ball 42,- in preparation for a new calculation, is swung back again into the position represented in Fig. 11 in order that it may be positioned in readiness for a new working stroke.

' By means of this rotational movement, the toothed segment 44 'is also swung in the direction opposite to the arrow d, whereby the pawl 54, loosely mounted on it, in consequence of its spring 65,-canslide'inoperatively over the nose 59 of the slide 55, and then by means 'of its spring 66, the pawl is again drawn against the fixed stop 51. Moreover, the toothedsegment 46 is swung round the shaft 41 in the direction opposite to the arrow 11. into its rest position whereby the pawl 51, attached to it, moves in ratchet fashion over the next tooth of the cam 50 and places itself according to Fig. 11 behind the same for a new working stroke. In the ratchet movement of the pawl 51, over the teeth of the cam 50, the same is held by means of the pawl 53.

If the typist, however, before the commencement of a new calculation, forgets to swing the bail 42 out of the position represented in Fig.12

into the position represented in Fig. 11; after the execution of the calculation, as may occur by' 'It is assumed that the typist, before the commencement of the new calculation, had forgotten to swing the bail 42 into the position according to Fig. 11, the slide 55 remains in its position as represented in Fig. 11, as it had been previously brought into this position by the nose 83 of the clear sign bridge N. All the remaining parts, however, are in the position according to Fig. 12.

v If he now types the amount, too small by 1f of that prwent in the cross totalizer Q, while under the impression that he had swung out the bail 42, for the purpose of bringing in the 1, the cross mtotalizsr Q returns naturally to zero. The clear sign cannot. however, be printed, as

the clear bridge l4 in consequence of the contact 7 of its nose 62 (Fig. 16) with the slide 55 cannot completely move downward. It can then only move downward to'the extent of the amount :r, which suffices to swing the lever l8 bymeans of the roller 13a and the rail 13 to such an extent that the edge 40 of the the lever ill. As, in the omission of the clear sign impression, as mentioned at the beginning, the lever I remains in its outswung position in the clockwise direction, held swung in the anti-clockwise direction, whereby the angle member 28 on the lever 2 takes up its locking position in relation to the lever 32 and consequently all the differential members 22 are held locked so that a further calculation is impossible.

The-typist may perceive the mistake by the hanging-up of the clear sign impression bridge, and if he overlooks this, by the locking of the differential members.

For the purpose of removing the error, he raises the rail 13 so that the lever 4, with its stop 4b, can again engage with the lever 10, and the angle member 38 gives up its locking position. He now moves the bail 42 out oi. the position represented in Fig. 12 and into the position represented in Fig. 11, and brings it immediately back again into the position according to Fig. 12 in order to bring the 1 which is lacking into the cross totalizer by means of the last swinging.

movement, and thus to set the slide 55 according to Fig. 12 or 17.

After he has brought the paper carriage back so. far in the direction opposite to the arrow c that the cross totalizer Q can be again carried along by the column totalizer i in the direction 01- the arrow c, he displaces the paper carriage so far in the direction of the arrow c, preferably by means of the known space bar, until the units position Ev'of the column totalizer l and therefore also the units position Eq of the cross totalizer Q, stand in the working position.

After he has shifted the paper round through a line space, he strikes the calculating key corresponding to the value "1 whereby the cross totalizer comes to zero, and the "1 which is lacking is registered in the column totalizer I,

and printed on the paper with the clear sign after it.' This shows then that the 1 provided with the clear sign is to be added to the number in the preceding line which is not provided with the clear sign.

In order that the cross totalizer Q may be applied in the usual manner without the inspection aperture 8 being covered by the ball 42 I (in which case, as has been shown, the clear sign would not be printed and the machine will be locked) it is only necessary to bring the slide 55, by means 01' the finger knob 55a provided on it into the position represented inFig. 19, in which position it does not lie in the path of the noses 62 and 63-0! the clearsign bridge I 4, and further, its nose 5!, is not acted on by the pawl 64. In consequence of this, the clear sign printing device can operate in each case in which the cross totalizer Q comes to zero, while the device, in.

so far as the slide 55, according to Fig. 16, is in the working position, only then operates, if the cross totalizer comes to zero, and the bridge 42 has been correctly actuated.

Although the arrangement is described for. the

bringing in of the value 1, naturally the arrangement through corresponding changes of the cam 50 and of the wheel 48, may also be constructed so that any desired unit may be-brought lever 4 can rest against so that the lever 4 is.

9 in, without depa ting from the spirit of the invention.

In the modified form 01' construction in Figs. 20 and 21, on the limb 42a of the bail 42, a small projection 08 is arranged, oi which thepin 69 projects through the slot ll of the cross totaliser side wall. 0n the end 01' the pin 69, is fixed a spring H, which at its other end is connected to a pin 12, and acts on the bail 42, always in the clockwise direction. On ascrew 13, a lever 14 is swingably mounted, which lever with its incline 15 can act on the projection 68. By means of the screw 16 on the lever 14, a downwardly projecting lever I1 is swingably arranged, through the elongated hole 18, of which projects a headed pin-l9, fixed to the lever ll of the clear sign bridge I4.- A spring 82, arrangedon the lever 11 and on the side wall of the always pulls upwardly on the lever 11.

It now the ball 42 is swung in the direction of the arrow h, the lever 11 travels upwards under the pull of the spring "fand acts on the lever 14, swinging the same around the screw 13 in the clockwise direction and with its incline 15, according to Fig. 21, rests on the edge of the projection 68, whereby the bail 42 is held in its position as represented in Fig. 21.

If the clear sign is now printed, the arm l1 swings around the screw 19 in the clockwise direction. Consequently, the pin 19 takes the lever l1 downwardly along with it and accordingly the lever I4 swings around the screw 12 in the anticlockwise direction and takes up the position represented in Fig. 20. The bail 42, can now 1501- low the pull oi the spring ii, and swings in the opposite direction to the arrow h, so that it likewise assumes the position represented in Fig. 20. The projection I then rests with its edge on the upper edge of the lever I4 and the lever 11, along with the lever 14, are thus prevented from iollowing the pull of the spring ll.

By means of this arrangement, the downward movement of the bail 42 is automatically attained while the parts 55, 58 and", i2, and also the pawl 42!, are not required.

I claim:

1. In a combined typewriting and computing machine, the combination with an accumulator having a sight opening therein and denominational value wheels movable step by step and visible through said opening, 01- a shutter for cross totaliser,

blinding said opening and movable in opposite directions into andi'rom blinding position, re-

shutter in one direction to impart a step of rotation to said wheel, and clear. sign printing mechanism automatically operative under the conjoint controlioi. said wheels and shutter.

2. In a combined typewriting and calculating machine, the combination with an accumulator having a sight opening and value wheels therein, of a shutter for uncovering and covering said opening, clear sign printing mechanism, automatically operative, and means to control operation of said sign printing mechanism including a locking member moved to unlocking position by operation 01' said shutter and restored to locking position b operation or said sign printing mechanism.

i 3. In a combined typewriting and calculating machine, the combination with an accumulator having a sight opening and value wheels therein, of a shutter for blinding said opening movable into and from blinding position, clear Sign Printing mechanism automatically operative, and means to control operation of said sign printing mechanism including a locking member movable to unlocking position by movement of said 1 shutter from blinding position and restored to locking position by operation of said sign printsaid opening, means controlled by said actuators,

a locking mechanism for said value wheels onerative by said means controlled by" said actuators to unlocking position, means for blocking operation of said mechanism, and clear sign printing mechanism operative under the con-= aioaeoi joint wheels and controlling operation of said bioching means.

5. In a combined typewritmg .11 calculating machine the combination with an accumulator casing having a sight op in and value wheels therein, a bail flap for uncovering and covering said opening, clear sign printing mechanism including means to control said sign printing mechanism in dependence of the position of the value wheels and operation of said hail flap and a locking member normally locking said mechaanism and operative to unloclnng position by operation of said bail flap and locking and unlocking mechanism for the value wheels blockable in the locking position under control of said clear sign printing mecha.

control of said shutter and said raine- 

